Hella USA sells the headlight panels with the holes in the correct places to accomodate the different location of the washer rod. $9.00 each I think.
They might even sell plain panels with no holes at all ... not sure, never asked.
I bought these panels and bought spec spray paint from towerpaint.com so now I have washable Euros!
FWIW I think the headlight washer system is pretty lame -- I never use it down here in TX, but maybe it's more useful up North with salted roads, etc. I preserved it simply for the looks, nothing more.
'91 300E, 207k miles